TWI403430B - Angle-adjusting head parts for front fork - Google Patents

Abstract

A set of angle-adjusting head parts for a front fork has a set of upper and lower head parts settled at a head tube's ends. The upper head parts includes an upper bearing cup having an oval slot axially provided, wherein the oval slot has two retaining surfaces in inner walls parallel to a longitudinal axis thereof; an upper bearing having an eccentric slot for receiving a front fork stem and extending downward and forming an eccentric seat for engaging with the oval slot; and an adjusting washer movably mounted to the upper bearing cup along a transverse axis of the oval slot and having an opening for receiving the upper bearing. When the upper bearing rotates, the eccentric seat is retained by the retaining surfaces and the sliding adjusting washer limits the eccentric slot to move along the longitudinal axis so as to bias the front fork's angle.

Description

Adjustable front fork angle head set

The present invention is a front end bowl, and more particularly, an angle for adjusting the front fork to change the axial distance between the front and rear wheels to match the driving condition and the rider's needs.

According to one of the general bicycle frame head tubes, a head set is connected to a front fork standpipe and a handle riser, and the angle of the front fork standpipe is fixed according to the angle of the frame head tube. The setting can be performed by using the upper and lower sets of Palin in the head cup group to rotate in the head tube of the frame; for the general bicycle rider, the front fork standpipe has no angle adjustment. Necessary needs, but for bicycle racers, because they often need to travel through various different road sections, their riding conditions are quite diverse, which makes them more controllable and stable during riding. High demand.

However, the riding sensitivity and stability, as well as the cruising ability, depend on the distance between the front and rear wheels and the angle of the front fork standpipe. When the track becomes shorter, the sensitivity of the control will increase, so it is more suitable for more bending. Road sections, and when the track becomes longer, the stability of the control will increase, so it is more suitable for straight-line high-speed sections; although most of the frames are designed with suitable track, to balance the sensitivity and stability. However, it is not possible to meet the diversified needs of the rider by adjusting the angle and track of the front fork standpipe.

In general, the shortcomings of the prior art, including the angle of the front fork standpipe and the track system of the conventional bicycle, are fixed, so that it is not possible to adjust the angle of the front fork standpipe and the track to match the riding condition. To meet the diversified needs of the rider; and in view of solving the above disadvantages, the present invention proposes a head set that can adjust the angle of the front fork.

The invention relates to a head group capable of adjusting a front fork angle, which is mainly composed of a bowl set and a lower bowl set at one end of a frame head tube to connect a front fork standpipe, wherein the upper bowl set The utility model comprises: an upper bowl seat, wherein an elliptical hole is arranged along the axial direction, the elliptical hole has a long axis and a short axis, and the inner wall on both sides of the parallel long axis direction respectively has a stop surface; The device is disposed on the upper bowl and has an annular portion. The annular portion is provided with an eccentric slot for the front fork to pass through, and the eccentric slot is tapered downwardly to the bottom of the ring. The end is formed to form an eccentric seat for inserting into the elliptical hole and being in contact with the equal stop surface; and a guiding member is slidably disposed on the upper bowl seat along the short axis direction of the elliptical hole, and has a circle a hole for arranging the annular portion so that the upper bowl member can rotate within the guiding member; thereby, when the upper bowl member rotates, the eccentric seat will contact the blocking surface, and synchronously drive the guiding member to slip To eliminate the displacement of the upper bowl member along the short axis direction of the elliptical hole, and to guide the axial position of the eccentric slot so that it can only follow the ellipse Hole axis direction of displacement, so as to drive the front fork of the standpipe yaw angle generated.

One of the objects of the present invention is to eliminate the displacement of the upper bowl member along the short axis direction of the elliptical hole by the cooperation between the blocking surface and the eccentric seat and through the uniaxial sliding of the guiding member, so that the eccentric slot is only It can be displaced parallel along the long axis of the elliptical hole to generate the yaw at the angle of the front fork standpipe, thereby changing the wheelbase by adjusting the angle of the front fork standpipe, so that the rider can adjust according to the riding condition To meet the diverse needs of riders.

The second object of the present invention is that the Palin group and the Lower Palin group in the upper bowl group and the lower bowl group are each a curved outer ring forest, so that the front fork vertical tube can be inclined along the inclined cone surface. Hemiplegia.

The third object of the present invention is that the operation adjustment is relatively easy, so that the fine adjustment can be quickly performed by rotating the upper bowl member, which is quite convenient and time-saving in operation.

The fourth purpose of this release is to correct the error of the angle of the head tube of the frame by adjusting the angle of the front fork standpipe to ensure that the track of the bicycle is optimal.

For the convenience of the description, the central idea expressed by the present invention in the column of the above summary of the invention is expressed by the specific embodiments. Various items in the embodiments are depicted in terms of ratios, dimensions, amounts of deformation, or displacements that are suitable for illustration, and are not drawn to the proportions of actual elements, as set forth above. In the following description, like elements are denoted by the same reference numerals.

As shown in the first and second figures, the present invention is a head group that can adjust the angle of the front fork, and mainly includes an upper bowl 10 and a lower set 20, respectively, which are respectively disposed on a frame head tube 30. At the upper and lower ends, the frame head pipe 30 is provided for a front fork standpipe 40, and a handle riser 50 is sleeved at the top end of the front fork standpipe 40.

The upper bowl 10 includes an upper bowl seat 11, an upper bowl member 12, a guiding member 13, and an upper palin set 14 and a pressing ring 15; the upper bowl 11 is provided with an ellipse along the axial direction a hole 111 having a long axis and a short axis, wherein the elliptical hole 111 has a curved surface 112 recessed on the inner walls of the two sides in the parallel long axis direction, and the bottom end of the curved surface 112 protrudes inwardly. The abutting portion 113 is configured to form a blocking surface 114 on each of the curved surface 112 and the top abutting portion 113. The upper housing portion 11 is respectively provided with a limiting portion 115 on both sides of the long axis direction of the elliptical hole 111. A receiving groove 116 is formed between the positions 115, and a fixing piece 117 is disposed on each of the limiting portions 115.

The upper bowl member 12 is disposed on the upper bowl seat 11. The upper bowl member 12 has an annular portion 121. The annular portion 121 is provided with an eccentric slot 122 for the front fork standpipe. 40, the eccentric slot 122 is tapered downwardly to the bottom end of the annular portion 121 to form an eccentric seat 123 for inserting into the elliptical hole 111 of the upper bowl 11 to be normally received. The abutting portion 113 is provided to be in contact with the curved surface 112.

The upper bowl member 12 has at least one adjusting protrusion 124 protruding from the annular portion 121; the upper Palin group 14 is disposed in the eccentric slot 122, and the upper Palin group 14 is an arc outer ring. The lining ring 15 is disposed in the upper lining group 14 by the urging ring 15 to provide a pressing action between the front fork vertical tube 40 and the upper pelline group 14.

The guiding member 13 is slidably disposed on the upper bowl 11 along the short axis direction of the elliptical hole, and has a circular hole 131, and the bottom portion is provided with a ring groove 132 for the upper bowl member 12 The annular portion 121 is rotatably embedded in the ring groove 132; the two sides of the upper surface of the guiding member 13 are respectively abutted against the fixing pieces 117, and each fixing piece 117 is forced by a fixing member 118. The guiding member 13 is tightly fixed, so that the guiding member 13 is fixed in the receiving groove 116 without causing falling off.

The lower bowl 20 includes a lower bowl 21, a lower Palin 22, and a lower plug 23, and the lower plug 23 is press-fitted into the bottom of the front fork vertical tube 40, and the lower bowl 21 is sleeved on the vehicle. The bottom tube 30 is at the bottom end, and the lower Palin group 22 is disposed in the lower bowl 21, and the lower Palin group 22 is also a curved outer ring.

After the above structure is clarified, the following is a detailed description of the action and principle of the present invention: as shown in the third figure, when the upper bowl member 12 is rotated until the adjustment projection 124 faces forward, the eccentric seat 123 is not in contact with the two. The curved surface 112 of the side, and the upper bowl member 12 and the guiding member 13 are aligned with the center of the upper bowl seat 11. At this time, the eccentric slot 122 is backwardly offset from the axial center position of the upper bowl 11; As shown in the fourth figure, when the angle of the front fork stand 40 is to be adjusted, the fixing member 118 on the fixing piece 117 is first loosened, and the screw-locking part above the handle riser 50 is also loosened. And using the finger to move the adjusting protrusion 124 on the upper bowl member 12 to rotate the upper bowl member 12. When the upper bowl member 12 is rotated until the adjusting protrusion 124 is directed to the right, the eccentric seat 123 is connected to the right side. The arcuate faces 112 are in contact with each other to synchronously drive the guiding member 13 to slide to the right. By the cooperation between the stopping surface 114 and the eccentric seat 123, when the guiding member 13 is slid, the upper cup member 12 can be eliminated along the ellipse. The displacement amount of the hole 111 in the short axis direction is 导 to guide the axial center position of the eccentric groove 122 so that it can only be along the long axis direction of the elliptical hole 111. To shift the position of the axis of the supremacy of the bowl seat 11.

As shown in the fifth and sixth figures, the upper bowl member 12 is continuously rotated according to the above adjustment manner. When the upper bowl member 12 is rotated until the adjustment projection 124 faces rearward, the eccentric slot 122 is forwardly offset. The pivot position of the upper bowl 11 , and when the upper bowl 12 is rotated until the adjustment projection 124 faces to the right, the eccentric slot 122 will return to the axial position of the upper bowl 11; The eccentric slot 122 is displaced before and after to cause a yaw at the angle of the front fork standpipe 40.

However, the direction of the rotation of the upper cup member 12 and the direction in which the eccentric slot 122 is adjusted are merely illustrative of the action and principle of the present invention. The actual adjustment direction is required to match the setting of the eccentric seat 123 and the adjustment protrusion 124. Depending on the direction.

As shown in the seventh figure, since the long axis direction of the elliptical hole 111 on the upper bowl 11 coincides with the axial direction of the frame body, and the frame head tube 30 is disposed obliquely, when the track is to be adjusted to the maximum Rotating the upper bowl member 12 to the front side of the adjusting protrusion 124 (as shown in the third figure), the front fork vertical tube 40 can be driven to obliquely yaw along the upper Palin group 14 and the lower Palin group 22, After the desired angle is adjusted, the fixing members 118 are tightened, so that the fixing pieces 117 are tightened to the guiding member 13 for fixing; otherwise, when the wheel track is to be minimized, the upper bowl member 12 is used. Rotate to the rear of the adjustment protrusion 124 (as shown in the fifth figure); thereby, the angle adjustment of the front fork vertical tube 40 allows the rider to adjust according to the riding condition and different riding requirements. The length of the track is to meet the diversified needs of the rider; in addition, since the angle of the frame head pipe 30 is affected by the position of the bicycle before the triangle is welded to the frame head pipe 30, however, since the welding position is inevitable There is a slight amount of error, which causes the angle of the frame head tube 30 to be changed, so through the front fork standpipe The angle adjustment of 40 can be used to correct the error of the angle of the head tube 30 of the frame, so as to ensure that the track of the bicycle is optimal.

While the invention has been described in terms of a preferred embodiment, the various modifications of the various embodiments can be made without departing from the spirit and scope of the invention. The above embodiments are merely illustrative of the invention and are not intended to limit the scope of the invention. All modifications and variations that are made without departing from the spirit of the invention are the scope of the invention.

10. . . Upper bowl

11. . . Upper bowl

111. . . Oval hole

112. . . Curved surface

113. . . Top abutment

114. . . Stop face

115. . . Limiting department

116. . . Locating slot

117. . . Fixed piece

118. . . Fixed component

12. . . Upper bowl

121. . . Ring

122. . . Eccentric slot

123. . . Eccentric seat

124. . . Adjustment bump

13. . . Guide

131. . . Round hole

132. . . Ring groove

14. . . Upper Palin

15. . . Tight ring

20. . . Lower bowl

twenty one. . . Lower bowl

twenty two. . . Lower Palin Group

twenty three. . . Under plug

30. . . Frame head tube

40. . . Front fork standpipe

50. . . Handle riser

The first figure is an exploded perspective view of the invention in use.

The second figure is a three-dimensional combination diagram of the invention in use.

The third figure is a schematic diagram of the action of the present invention (1).

The fourth figure is a schematic diagram of the action of the present invention (2).

The fifth figure is a schematic diagram of the action of the present invention (3).

The sixth figure is a schematic diagram of the action of the present invention (4).

The seventh figure is a schematic view of the action of adjusting the angle of the front fork tube according to the present invention.

10. . . Upper bowl

11. . . Upper bowl

115. . . Limiting department

117. . . Fixed piece

12. . . Upper bowl

13. . . Guide

twenty one. . . Lower bowl

30. . . Frame head tube

50. . . Handle riser

Claims (10)

The head group capable of adjusting the angle of the front fork is mainly disposed on one of the two ends of a frame head tube and a lower bowl to connect a front fork standpipe, wherein the upper set includes: The bowl base is provided with an elliptical hole along the axial direction, the elliptical hole has a long axis and a short axis, and the inner wall on both sides of the parallel long axis direction is respectively provided with a stop surface; The upper bowl has an annular portion, and the annular portion is provided with an eccentric slot for the front fork vertical tube to pass through, and the eccentric slot extends downwardly to the bottom end of the annular portion to form a An eccentric seat for inserting into the elliptical hole and contacting the stop surface; and a guiding member slidably disposed on the upper bowl seat along the short axis direction of the elliptical hole, having a circular hole to The annular portion is arranged to rotate the upper bowl member in the guiding member; thereby, when the upper bowl member rotates, the eccentric seat will contact the stopping surface, and the guiding guide member slides synchronously to eliminate The displacement of the upper bowl member along the short axis direction of the elliptical hole, 俾 to guide the axial position of the eccentric slot, so that it can only along the long axis of the elliptical hole Displacement, so as to drive the front fork of the standpipe yaw angle generated. The head cup group of the adjustable front fork angle according to the first aspect of the invention, wherein the upper bowl seat is respectively provided with a limiting portion on both sides of the long axis direction of the elliptical hole, so that the two limiting portions are formed. A receiving groove is provided for the guiding member to be slidably disposed in the receiving groove. The head group of the adjustable front fork angle according to claim 2, wherein each of the limiting portions is provided with a fixing piece for fastening the guiding piece by a fixing member. The head group of the adjustable front fork angle according to claim 1, wherein each of the stopping surfaces is formed by a curved surface of the elliptical hole, and one of the bottom end of the curved surface is abutting form. An adjustable front fork angle head set according to claim 1, wherein the upper bowl At least one adjusting protrusion is protruded from the ring portion. The head group of the adjustable front fork angle according to the first aspect of the patent application, wherein the upper bowl group and the lower bowl group respectively have an upper Palin group and a lower Palin group, and the upper Palin group It is disposed in the eccentric slot, and the lower Palin group is disposed in a lower bowl of the bottom end of the front tube. The adjustable front fork angle head set according to claim 6, wherein the upper periline group and the lower periline group are each a curved outer ring. The head group of the adjustable front fork angle according to the first aspect of the invention, wherein the guide member is provided with a ring groove for the annular portion to be rotatably embedded therein. The adjustable front fork angle head set according to claim 1, wherein the eccentric slot is offset from the axis of the upper bowl when the guiding member is at the axial position of the upper bowl position. The adjustable front fork angle head set according to claim 1, wherein when the guiding member slides outward on the upper bowl, the eccentric slot will go to the shaft of the upper bowl Heart position displacement.